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Originally Posted by SmknVTEC
Looks good urgr8estfear,
Sorry I am a bit late to the party. What is your current total exaust in CFM? Just wondering because at 92 degrees your temps are still a bit high. I wonder if a 256 cfm fan would work or help?
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Thanks VTEC welcome to this thread.
Don't worry about the ventilation, here's a little copy/paste i did from the first post in this thread.
So, a bit of handywork seemed in order :
Again more power. 1x 30 cm 30W fan. The 9 cm fans drew 3W each, so this sucker is 5 times as powerful and many more times efficient. I don't know the CFM or maybe even CYM rating of this sucker but if I leave the door of my growbox open by 4 inches the fan will suck it closed. LOL. 
I guess this will suffice. The difference between room temp and box temp have dropped to about 5 degrees C, which I will improve on further by making the intake hole larger.
And I did make the intake hole larger, its a subtle 10 cm by 30 cm.
Damn thing still sucks the door closed though.
The difference in temps between my grow box and the room the box is in is about 2 degrees celcius, which is excellent!!
Since I cannot afford AC its up to Jah to lower the temps of my box.
Stupid heatwaves!